I'm another who have seen them advertised but no experience.
It looks quite a solid machine, stainless steel according to the Amazon website, and a good weight at 8.5kg. 1000 stitches per minute as well.
https://www.betterequipped.co.uk/necchi-q132a-ib417-sewing-machine-45366 32 built in stitches
• One step buttonhole
• Built in needle threader
• Horizontal drop in bobbin system
• Max 1000 rpm sewing speed
• Adjustable stitch length
• Adjustable stitch width
• Adjustable presser foot pressure
• Variable needle positions
• Drop feed
It reminds me a bit of the Janome HD series, which are supposed to be a lot more rugged than the others. There are also a few good reviews of Amazon. I think the term 'semi professional' is used a lot nowadays as a marketing tool. Just a question of ignoring and looking beyond that.
Husqvarna Emerald 118 is a well known brand/machine and there are many good reviews on it and a few bad ones.
The Janome you mentioned was used in the GBSB program, well known name etc., although this is a lighter model around 6.7 kg
I don't think anyone can make the decision for you, it's just a question of weighing everything up and going with your gut and a guarantee. A bricks and mortar shop might help you.
There are some videos on it as well:
https://www.youtube.com/watch?v=4tqfY9DOC00